{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "data breach", "arguments": ["attack pattern", "number of data", "time", "victim", "place", "compromised data", "attacker", "damage amount", "number of victim", "tool"]}], "input": "The details are somewhat slim for now , but hackers reportedly used the SamSam ransomware and demand around $ 51,000 in Bitcoin to unlock the city ’s seized computers ."}
{"data breach": []}